CVP Across Lifespan

Question 1

Fetal circulation

Answer 1

R> L heart pressure
R>L shunt
PVR>SVR
No gas exchange

Question 2

Newborn circulation

Answer 2

L>R heart pressure
L —> R flow
SVR > PVR
RV compliance > LV
Expansion of lungs = initiate gas exchange
Shunt closure: ductus arteriosus > foramen ovale

Question 3

Septal defects

Answer 3

Atrial septal defect
Ventricular septal defect

Question 4

Older adults vascular changees

Answer 4

1. Decreased compliance
2. Increased risk HTN, HF
3. Increased LV afterload
4. Decreased endothelial function

exercise can increase compliance

Question 5

Older adult cardiac changes

Answer 5

Muscle: LV thickens, decreased heart compliance
Conduction: increased SA nodes, increased risk of dysrhythmias
Valves: thickens, fucks up filling

Question 6

older adult pulmonary changes

Answer 6

decreased: elastic recoil, FEV, FVC, VC, gas exchange
increased: residual volume, functional residual capacity